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C2851-35UC/K9
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- 2851 w/ PVDM2-48,NME-CUE,35 CME/CUE/Ph lic,SP Serv,128F/512D
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C2851-35UC/K9
2851 w/ PVDM2-48,NME-CUE,35 CME/CUE/Ph lic,SP Serv...
$13,895.00
$6,309.00
35 in Global Warehouse
$6,309.00
55% off
TRUSTED, TRIED, PROVEN
C2851-35UC/K9 Overview
C2851-35UC/K9 is a robust integrated services router built on a modular architecture that supports expansion via EHWIC modules, ensuring flexible customization while maintaining reliable performance. It offers versatile power options with an AC power supply, high availability redundancy, and dual WAN interfaces along with dedicated LAN ports that expedite secure connectivity and advanced integrated services.
C2851-35UC/K9 delivers industry-class throughput and comprehensive VPN features, supporting routing protocols such as OSPF, BGP, EIGRP, and RIP to meet the communications demands of dynamic enterprise environments. Its integrated voice capabilities, built-in firewall, and modular design make it ideally suited for branch offices and unified communications deployments that require robust performance and reliable redundancy.
What is the price of C2851-35UC/K9?
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C2851-35UC/K9 Specifications
| Product Type | Enterprise Router |
| VPN Support | IPSec / SSL VPN / DMVPN |
| Power Source | AC Power Supply |
| Routing Protocols | OSPF / BGP / EIGRP / RIP / Static Routing |
| Broadband | N/A |
| Architecture | Modular |
| WAN Configuration | Dual WAN |
| WAN Ports | 2 WAN |
| LAN Ports | 2 LAN Ports |
| Ethernet Technology | 10/100 |
| Wi-Fi Standard | N/A |
| Connectivity Type | Wired |
| Network Protocols | IPv4 / IPv6 |
| Remote Management | Telnet / SSH / SNMP |
| Compliance Standards | FCC / CE / RoHS |
| Wireless Support | No |
| Speed/Capacity | N/A |
| Firewall Features | Yes |
| Features | VPN / VoIP / Integrated Services / Firewall |
| Use Case | Enterprise / Business |
| Management | Managed |
| Form Factor | Rack-mount |
| Integrated Services | Voice |
| High Availability Support | Supported |
| Safety | N/A |
| EMC | N/A |
| Telecom | N/A |
| Throughput Capacity | 75 Mbps |
| QoS Features | Supported |
| Built-in Security Features | Firewall / Intrusion Prevention |
| Expansion Slots | EHWIC |
| Modular Slots Available | 2 Slots |
| Stacking Capability | No |
| 5G Support | No |
| Memory | 256 MB |
| Flash Memory | 128 MB |
| Interface Ports | RJ-45 |
| Power | 220 W |
| Device Type | Router |
| Product Name | Cisco 2851 Integrated Services Router (UC) |
| Height | N/A |
| Width | N/A |
| Depth | N/A |
| Weight | N/A |
C2851-35UC/K9 Use Case
Branch Office Converged Data and Voice Deployment
In a multi‐site financial services firm, IT deploys the Cisco C2851-35UC/K9 with PVDM2-48 DSPs, NME-CUE, 35 CME/CUE/Ph licenses, SP Services and 128F/512D memory to deliver unified data and voice over dual Gigabit Ethernet. The platform supports up to 35 concurrent Cisco Unified Communications Manager Express calls, applies advanced QoS for voice prioritization and provides secure VPN backhaul to headquarters. Outcome: consolidates routing and telephony on one device, cuts hardware CAPEX by 40%, and ensures 99.99% uptime for critical voice and trading applications.
Secure VPN Aggregation and Cloud On-Ramp
A managed service provider uses the Cisco C2851-35UC/K9 with PVDM2-48, SP Services licensing and 128F/512D memory to aggregate 50+ site-to-site IPsec tunnels and deliver multi-tenant connectivity. The NME-CUE module hosts edge IVR applications and the 35 CME/CUE/Ph licenses enable hosted voice services for small business customers. Benefit: centralized VPN and voice management, 30% faster customer onboarding, and end-to-end AES-256 encryption with carrier-grade QoS.
HIPAA-Compliant Telemedicine and IVR
In a regional healthcare network, the Cisco C2851-35UC/K9 with PVDM2-48 DSPs, NME-CUE and 35 CME/CUE/Ph licenses powers secure telemedicine consultations and automated IVR patient check-in. SP Services ensures encrypted EHR access over IPsec, while 128F/512D memory supports routing segmentation for PHI traffic. Outcome: achieves full HIPAA compliance, reduces call setup time by 25%, and halves the physical footprint compared to separate voice and data appliances.
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table
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|---|---|---|---|---|---|
| 5G Support | No | No | No | No | No |
| Architecture | Modular | Modular | Fixed | Modular | Fixed |
| Broadband | N/A | N/A | N/A | N/A | N/A |
| Built-in Security Features | Firewall, Intrusion Prevention, Malware Protection | Firewall / Intrusion Prevention | Firewall / Intrusion Prevention | Firewall / Intrusion Prevention | Firewall, Intrusion Prevention, Malware Protection |
| Compliance Standards | FCC, CE, UL | FCC / CE / RoHS | FCC / CE / RoHS | IEEE 802.3 / IEEE 802.11 | IEEE 802.3, FCC, CE |
| Connectivity Type | Wired / Wireless / Ethernet | Wired | Wired | Wired | Wired |
| Depth | 11.3 inches | N/A | N/A | N/A | N/A |
| Device Type | Router | Router | Router | Router | Router |
| EMC | N/A | N/A | N/A | N/A | N/A |
| Ethernet Technology | 10/100 | 10/100 | 10/100 | 10/100 | 10/100 |
| Expansion Slots | EHWIC | EHWIC | EHWIC | EHWIC | EHWIC |
| Features | Voice, VPN, IPv6 Compatible, Firewall | VPN / VoIP / Integrated Services / Firewall | VPN / VoIP / IPv6 Compatible / Firewall | VPN / IPv6 Compatible / Firewall | VPN, Voice, IPv6 Compatible, Firewall, Modular Expansion |
| Firewall Features | Yes | Yes | Yes | Yes | Yes |
| Flash Memory | 256 MB | 128 MB | 256 MB | 128 MB | 128 MB |
| Form Factor | Rack-mount | Rack-mount | Rack-mount | Chassis | Desktop / Rack-mount |
| Height | 1.73 inches | N/A | N/A | N/A | N/A |
| High Availability Support | Not Supported | Supported | Supported | Supported | Not Supported |
| Integrated Services | Voice, Data, Security, Wireless | Voice | Voice | Voice / Video / WAN Optimization | Voice, Video, WAN Optimization |
| Interface Ports | RJ-45 | RJ-45 | RJ-45 | RJ-45 | RJ-45, Console Port, AUX Port |
| LAN Ports | 4 LAN Ports | 2 LAN Ports | N/A | 2 LAN Ports | 2 LAN Ports |
| Management | Managed | Managed | Managed | Managed | Managed |
| Memory | 256 MB | 256 MB | 512 MB | 256 MB | 256 MB |
| Modular Slots Available | 2 Slots | 2 Slots | 2 Slots | 2 Slots | 2 Slots |
| Network Protocols | IPv4, IPv6 | IPv4 / IPv6 | IPv4 / IPv6 | IP / TCP/IP / UDP / ICMP | IP, Frame Relay, ATM |
| Power | 70W | 220 W | 140W | 225 W | 150W |
| Power Source | AC Power Supply | AC Power Supply | AC Power Supply / Redundant | AC Power Supply / Redundant | AC Power Supply |
| Product Name | Cisco 2851 Integrated Services Router - Wireless Access Edition | Cisco 2851 Integrated Services Router (UC) | Cisco 2851-H-VSEC/K9 | Cisco 2811 Integrated Services Router Wireless Access Edition | Cisco 2801-AC-IP Integrated Services Router |
| Product Type | Enterprise Router | Enterprise Router | Enterprise Router | Enterprise Router | Enterprise Router |
| QoS Features | Supported | Supported | Supported | Supported | Supported |
| Remote Management | SNMP, Telnet, SSH | Telnet / SSH / SNMP | SSH / Telnet / SNMP | SSH / Telnet / SNMP | SSH, Telnet, SNMP |
| Routing Protocols | OSPF / EIGRP / BGP / RIP / Static Routing | OSPF / BGP / EIGRP / RIP / Static Routing | OSPF / BGP / EIGRP / RIP / Static Routing | OSPF / BGP / EIGRP / RIP / Static Routing | OSPF / BGP / EIGRP / RIP / Static Routing |
| Safety | N/A | N/A | N/A | N/A | N/A |
| Speed/Capacity | 10/100 | N/A | N/A | N/A | 100Mbps |
| Stacking Capability | No | No | No | No | No |
| Telecom | N/A | N/A | N/A | N/A | N/A |
| Throughput Capacity | 25 Mbps | 75 Mbps | 0.085 Gbps | N/A | 75 Mbps |
| Use Case | Enterprise | Enterprise / Business | Enterprise | Enterprise | Business / Small Business / Enterprise Branch |
| VPN Support | IPSec / GRE / DMVPN | IPSec / SSL VPN / DMVPN | IPSec / SSL VPN / DMVPN | IPSec / DMVPN / N/A | IPSec |
| WAN Configuration | Dual WAN | Dual WAN | Dual WAN | Dual WAN | Dual WAN |
| WAN Ports | 2 WAN | 2 WAN | 2 WAN | 2 WAN | 2 WAN |
| Weight | 15.6 lbs | N/A | N/A | N/A | N/A |
| Wi-Fi Standard | WiFi 4 | N/A | N/A | WiFi 3 | N/A |
| Width | 17.0 inches | N/A | N/A | N/A | N/A |
| Wireless Support | Yes | No | No | Yes | No |
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Questions & Answers
Q
What is the Cisco C2851-35UC/K9 router?
A
The Cisco C2851-35UC/K9 is an integrated services router featuring a PVDM2-48 voice DSP, NME-CUE media module, 35 concurrent CME/CUE/Ph licenses, Service Provider services, 128 MB flash, and 512 MB DRAM.
Q
What are the key hardware features of the C2851-35UC/K9?
A
Key hardware features include a dual-core 1 GHz processor, PVDM2-48 DSP slots, NME-CUE voice module support, four integrated Gigabit Ethernet ports, and modular WAN interface capabilities.
Q
What is the PVDM2-48 voice DSP module?
A
PVDM2-48 is a Cisco digital signal processor module that supports up to 48 voice channels for transcoding, conferencing, and media processing on the 2851 platform.
Q
What does the NME-CUE module provide?
A
The NME-CUE (Network Module Enhanced – Cisco Unity Express) delivers on-premises voicemail, auto attendant, and messaging services directly on the 2851 router.
Q
How many CME/CUE/Ph licenses are included?
A
The C2851-35UC/K9 SKU includes 35 concurrent call licenses for Cisco Unified Communications Manager Express (CME), Cisco Unity Express (CUE), and phone features.
Q
What Service Provider services are supported?
A
Service Provider services include MPLS VPN, QoS, multicast, and traffic shaping, optimized for service provider edge deployments on the 2851.
Q
What memory and storage does the 2851 router have?
A
The router ships with 512 MB of DRAM and 128 MB of onboard flash storage, expandable via CompactFlash for additional images and files.
Q
How many simultaneous voice calls can it handle?
A
With PVDM2-48, the 2851 supports up to 48 simultaneous G.711 calls or a mixed codec environment based on DSP resource allocation.
Q
Which network interfaces are available?
A
The router includes four integrated Gigabit Ethernet ports, two onboard T1/E1 ports (optional), and four NIM slots for WAN or voice modules.
Q
What WAN connectivity options exist?
A
Options include serial T1/E1, xDSL, 3G/4G wireless, and multi-interface NIM modules for flexible site-to-site or Internet access.
Q
What security features does the C2851-35UC/K9 provide?
A
Security features include Cisco IOS Firewall, IPS, VPN (IPsec/SSL), Zone-Based Firewall, advanced encryption services, and secure boot.
Q
What are common deployment scenarios?
A
Common use cases cover branch office routing, integrated voice telephony with CME/CUE, secure VPN connectivity, and service provider edge routing.
Q
How can I upgrade the router’s performance?
A
Performance upgrades include installing additional PVDM2 modules, expanding DRAM via SODIMM slots, and adding CompactFlash storage for images.
Q
How do I configure voice services on the 2851?
A
Voice services are configured through Cisco IOS CLI or CME GUI, defining DSP resources, dial peers, voicemail profiles, and user extensions.
Q
What tools are available for performance monitoring?
A
Use Cisco Prime, Embedded Event Manager, SNMP, NetFlow, and on-board IOS show commands to monitor CPU, memory, voice DSP, and interface statistics.
Q
What are the power and environmental specifications?
A
The router consumes up to 60 W, supports 100–240 VAC, 50/60 Hz input, operates between 0 °C–45 °C, and meets NEBS Level 3 and RoHS compliance.
